Basic Electricity and Electronics

A +8 coulomb charge is 

• positive because it gained electrons
• positive because it lost electrons
• positive because it gained protons

Which of the following is the symbol for current?

• A
• V
• Ω
• I

What is the definition of current?

• The movement of electrons
• Force created by the buildup of charge
• Force times distance
• A twisting or rotary force

What is the definition of voltage?

• The movement of electrons
• Force created by the buildup of charge
• Force times distance
• A twisting or rotary force

What is resistance?

• The interaction of two magnetic fields
• Conversion of mechanical energy into electrical energy
• Ann imbalance between electrons and protons
• The opposistion to current flow

What is the formula for Ohm's law?

• P= V*I
• V = I * R
• F=M*A
• I=V²* R

The unit of resistance is the

• Coulomb
• Joule
• Ampere
• Ohm

The unit of electrical charge is the

• Coulomb
• Joule
• Ampere
• Ohm

A circuit has a 12 V power supply and a 1000Ω. What is the current?

• .012 A
• 83.33 A
• 12000A
• None of the others

A circuit has a 42,000Ω and .005A of current. What is the voltage?

• 210 V
• 330 V
• 1.19 x 10^-7 V
• None of the others